资料介绍
计算机与信息技术论文
一种基于CPLD的正交脉冲小数分频技术
摘要：在交流伺服系统中对码盘脉冲信号进行小数分频有其必要性。由于正交脉冲具有
方向，因此对码盘信号的小数分频应该是有方向的双向分频。分频的一个重要指标是分
频过程中不丢失脉冲，分频后仍以正交形式反馈给上位机。本文阐述了小数分频的基本
原理及分频过程，给出了基于CPLD的实现框图，仿真和试验结果验证了该方法的有效性
。
关键字：正交脉冲；复杂可编程逻辑元件；小数分频；伺服系统
A technique of fractional frequency division for CPLD based on the
orthogonal pulse
Abstract: it is necessary to divide frequency of encoder pulse in ac
servo systems. Due to the directivity of the orthogonal pulse, the
fractional frequency should have the characteristics of reversible
frequency division. The important index is to prevent the pulse numbers
dropping out and to feed back the output signal to the PC without dropping
out. The basic principle and procedure for frequency division are described
in detail and the diagram based on
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